Dumping-trap.



No. 784,465. PATENTED MAR. 7, 1905. W. ANDERSON.

DUMPING TRAP.

APPLICATION FILED 1330.19. 1903.

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m\.\ l m2 3 0\ k\ w m t w N w 0, M Q h w m h PATENTED MAR. 7, 1905. W.ANDERSON.

DUMPING TRAP.

APPLICATION FILED DEO.19, 1903.

2 SHEETSSHEBT 2.

. fi I m 6 x x 5 F z m UNITED STATES Patented Maren 7, 1905.

PATENT OFFICE.

DUMPlNG-TRAP.

SPECIFICATION forming part of Letters Patent No. 784,465, dated March 7,1905.

Application filed December 19, 1903. Serial No. 185.856.

To (/J/ whom it may concern:

Be it known that I, iViLLIAM ANDERSON, of Hoffman, county of Grant, andState of Minnesota, have invented certain new and useful Improvements inDumping-Traps, of which the following is a specification.

My invention relates to dumping or trap devices for cars used inconnection with an elevated platform through which a load is dumped froma wagon into a car beneath.

The object of the invention is to provide improved means for easily andquickly operating the doors of a trap to open and close the same.

Other objects of the invention will appear from the following detaileddescription.

The invention consists generally in various constructions andcombinations, all as hereinafter described, and particularly pointed outin the claim. 7

In the accompanying drawings, forming part of this specification, Figure1 is a side elevation, partially in section, of a dumpingplatform withmy invention applied thereto. Fig. 2 is a plan view of the same. Fig. 3is a detailed sectional view showing the doors in their open positionand the means for operating the same on line 51 1 of Fig. at. Fig. 4 isa side view in section of a portion of the trap device, showing thedoors open, taken substantially on the linea' :12 of Fig. 3. Fig. 5 is asectional view of the device, showing the doors in their closed positionon line .2 of Fig. 4.

in the drawings, 2 represents a platform supported at a suitableelevation upon posts 3 above a track 4:, whereon a car 5 is shown inposition to receive the load. Suitable driveways or approaches 6 areprovided upon each side of the dumrung-platform. An opening 7 isprovided in said platform through which the load is discharged from thewagon standing upon timbers 8, and said opening is normally closed bydoors 9, hinged on one side to said platform and arranged to swingtoward each other to a horizontal position, as indicated in Fig. 5.

Chains 10 are connected to the said doors and platform to limit theoutward swinging movement of the doors when they are opened preparatoryto the dumping operation. Beneath the discharge opening, at one sidethereof. is an upright post 11,whcreon a guiderod 12 is supported. r

13 represents bars that are pivotally connected at their upper ends,respectively, to the doors 9, their lower ends being mounted on a commonpivot l i, that is slidably supported at one end on the rod 12. A rope15 is connected to the pivot lei and passes over a pulleybloek 16 to thelower end of an operatinglevcr 1'7, that projects through a slot 18 inthe clumping-platform and is pivotally supported thereon. The upper endof the lever 17 extends a suflicient distance above the platform toenable the operator to conveniently grasp the same for the purpose ofswinging it to raise the bars 13 and open the doors. hen the doors areraised, the discharge-openin g will be exposed and the wagon-load ofgravel or other material may be dumped into the car beneath, beingguided by fixed guide-boards or shields 19, that are suspended beneaththe dumping-platform on each side of the opening therein. The loadhaving been discharged, the operating-lever is released and the bars 13will return by gravity to their normal depressed position andautomatically close the trap-doors. Another wagon may then be drivenonto the platform and the dumping operation repeated.

I claim as my invention A dumpirig-platform comprising a horizontalmiddle section having inclined approaches on two sides and acentrally-arranged elongated discharge-openii1g, doors hinged at one. oftheir longitudinal edges to the correspondingedges of said opening andadapted to swing toward one another down to a horizontal position toclose said opening, stay-chains connecting said doors and platform andlimiting the outward swinging movement of the former, bars hinged attheir upper ends to the ends of said doors near their free longitudinaledges and arranged to lift said doors from a horizontal to a verticalposition, a pivot pin whereon the lower ends of both said bars aremounted, a vertical guide-rod whereon one end of said pin is slidablymounted, and a In witness whereof I have hereunto set my lever mountedon said platform and having an handthis 1st clay of December, 1903.

operative connection with said pivot-pin to raise said bars and liftsaid doors to a vertical WILLIAM ANDERSON 5 open position or allow themto drop by grav- In presence of ity to a closed position, substantiallyas de- ERNEST S. GAIL,

scribed. l L. L. DODGE.

